Abstract: A sandbag filler assembly for attachment to an axially movable filler-material source container. The assembly includes a filler chute for delivery of filler material into the sandbag, with the chute having a first open end and a second open end opposite the first end. The first open end has an attachment connection connectable to be in flow communication with a delivery conduit of the source container. An axially compressible sandbag, open at one end and closed at an opposite end, is placeable in a compressed configuration around the filler chute such that the filler chute is within the sandbag with the closed end of the sandbag generally adjacent the second open end of the filler chute. An adjustable sandbag retainer is provided for selective retention and release of the sandbag from around the filler chute as the sandbag has introduced therein filler material to thereby cause sequential movement of sandbag segments from the filler chute.